Every steamer carrying passengers or freight shall be provided with suitable pipes and valves attached to the boiler to convey steam into the hold and to the different compartments thereof to extinguish fire, or such other suitable apparatus as may be prescribed by the regulations of the board of supervising inspectors, with the approval of the Secretary of Commerce, for extinguishing fire in the hold and compartments thereof by the introduction through pipes into such hold and compartments of carbonic acid gas or other fire-extinguishing gas or vapor; and every stove used on board of any such vessel shall be well and securely fastened, so as to prevent it from being moved or overthrown, and all woodwork or other ignitible substances about the boilers, chimneys, cook houses, and stove-pipes, exposed to ignition shall be thoroughly shielded by some incombustible material in such a manner as to leave the air to circulate freely between such material and woodwork or other ignitible substance; and before granting a certificate of inspection the inspector shall require all other necessary provisions to be made throughout such vessels to guard against loss or danger from fire. (R. S., 4470; Mar. 3, 1905; sec. 7.) Every steamer permitted by her certificate of inspection to carry as many as fifty passengers, or upward, and every steamer carrying passengers, which also carries cotton, hay, or hemp, shall be provided with a good double-acting steam fire-pump, or other equivalent apparatus for throwing water. Such pump or other apparatus for throwing water shall be kept at all times and at all seasons of the year in good order and ready for immediate use, having at least two pipes of suitable dimensions, one on each side of the vessel, to convey the water to the upper decks, to which pipes there shall be attached, by means of stop-cocks or valves, both between decks and on the upper deck, good and suitable hose of sufficient strength to stand a pressure of not less than one hundred pounds to the square inch, long enough to reach to all parts of the vessel and properly provided with nozzles, and kept in good order and ready for immediate service. Every steamer exceeding two hundred tons burden and carrying passengers shall be provided with two good double-acting fire-pumps, to be worked by hand; each chamber of such pumps, except pumps upon steamers in service on the twenty-eighth day of February, eighteen hundred and seventy-one, shall be of sufficient capacity to contain not less than one hundred cubic inches of water; and such pumps shall be placed in the most suitable parts of the vessel for efficient service, having suitable well-fitted hose to each pump, of at least one-half the vessel in length, kept at all times in perfect order, and shipped up and ready for immediate use. On every steamer not exceeding two hundred tons, one of such pumps may be dispensed with. Each fire-pump thus prescribed shall be supplied with